So far this year, mosquitoes trapped in 18 towns have tested positive for West Nile. Those towns are Bridgeport, Cromwell, Darien, East Hartford, Easton, Fairfield, Hartford, Milford, New Haven, Newington, Stamford, Stratford, Waterford, West Hartford, West Haven, Westport, and now Wethersfield.

There has been one human case of West Nile Virus reported this year in a Milford resident in their 70s.

Residents can reduce the risk of contracting the virus by wearing insect repellent, avoid being outdoors between dawn and dusk, or wearing long sleeves or pants.

West Nile virus has been detected in the state every year since 1999. During 2015, it was detected in mosquitoes collected in 24 towns. Last year, 10 confirmed human cases of West Nile were reported for residents in Bridgeport, Fairfield, Milford, New Haven and Shelton.